| Budget Amount *help |
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2020: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2019: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
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| Outline of Final Research Achievements |
Electron spins in a semiconductor quantum dot structure is a fascinating platform for a scalable quantum computer. However, electron spin qubits are extremely sensitive to noise in the host material, making it difficult to implement precise control while maintaining quantum mechanical coherence in real devices. In this research, we established a set of feedback control techniques based on the precise measurement and control of single electron spins to detect various noise effects and suppress them in real time. We demonstrated their performance with spin qubit devices for the first time, showing that errors due to noise can be significantly reduced in every qubit manipulation step, including qubit control, measurement, and initialization.
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